The FMK G3 Gen 3 is a SAO 9mm pistol with an OD Green polymer frame and a carbon steel black slide. It holds 14+1 rounds through a 4-inch barrel, measures 6.85 inches overall, and weighs 23.45 oz (approximately 1.5 lbs). The interchangeable backstrap lets you adjust grip fit. 
 

Key Specifications 

• Brand: FMK 
• Model Name: G3 
• Caliber: 9MM Luger 
• Action: Single Action Only (SAO) 
• Capacity: 14+1 rounds 
• Barrel Length: 4 inches 
• Overall Length: 6.85 inches 
• Weight: 23.45 oz (approximately 1.5 lbs) 
• Grip Material: Black Backstrap (Interchangeable) 
• Slide Material: Carbon Steel with Black Finish 
• Frame Material: Polymer with OD Green Finish 
• Safety Feature: Trigger Safety 
   

Detailed Features 

The polymer frame is designed to fill the hand well with a comfortable hold. The interchangeable backstraps let you dial in grip size. At 23.45 oz., the G3 is on the lighter side for a 14+1 9mm. The SAO trigger requires the hammer to be cocked for the first shot, which gives a lighter and more consistent pull than DA/SA designs. Trigger safety is the primary passive safety mechanism. Built in the USA. 
 

Target Audience 

New shooters who want a 14+1 capacity 9mm at a budget price, and experienced shooters looking for a domestic-made SAO option in the compact class. 
 

Usage Scenarios 

Suited for home defense, concealed carry, and range training. The 14+1 capacity gives you more rounds than many compacts in this weight class. The OD Green frame is a deliberate aesthetic choice that stands out from the typical black or gray options.

The FMK G3 Gen 3 in OD Green gets a generally positive but qualified reception.

The 14+1 capacity is the most frequently cited positive. It's competitive for this size and price range, and the OD Green color option gets consistent praise from buyers who want something other than standard black. Ergonomics draw good marks from most owners, and the interchangeable backstraps help with fit. At 23.45 oz., it's comfortable to carry.

Performance at the range is generally described as reliable and acceptably accurate for the class. The SAO trigger gets positive comments from shooters who prefer the lighter pull over DA/SA designs.

The primary concerns are around brand reputation and long-term durability compared to more established manufacturers, and aftermarket parts and support are more limited than for Glock or M&P-based platforms. Some buyers note that the trigger feel doesn't quite match higher-end SAO pistols.

Overall: a reasonable budget SAO option with good capacity, best suited for buyers who specifically want a domestic-made compact 9mm at an accessible price.